Python脚本不响应鼠标事件

Question

我有一个python脚本，用于侦听鼠标单击全局事件：

from AppKit import *
from PyObjCTools import AppHelper
import CoreFoundation

def handler(event):
    NSLog(event)
    print(event)

NSEvent.addGlobalMonitorForEventsMatchingMask_handler_(NSLeftMouseDownMask, handler)
AppHelper.runConsoleEventLoop()

但是，这只是永远运行，不响应鼠标事件，有什么问题吗

Answer 1

有两件事不对：

• 您需要首先创建一个应用程序实例，然后将事件处理程序附加到它
• 您需要使用^{}来检测鼠标点击

PyObjCTools API docs提供了许多示例代码。您可以查看HelloWorld脚本以了解如何创建应用程序对象。您需要将调用addGlobalMonitorForEventsMatchingMask_handler_的原始代码放在applicationDidFinishLaunching回调中

from AppKit import *
from PyObjCTools import AppHelper
import CoreFoundation

class AppDelegate(NSObject):
    def applicationDidFinishLaunching_(self, notification):
        NSEvent.addGlobalMonitorForEventsMatchingMask_handler_(NSLeftMouseDownMask, handler)

def handler(event):
    NSLog(u"%@", event)
    print(event)

if __name__ == '__main__':
    app = NSApplication.sharedApplication()

    # we must keep a reference to the delegate object ourselves,
    # NSApp.setDelegate_() doesn't retain it. A local variable is
    # enough here.
    delegate = AppDelegate.alloc().init()
    NSApp().setDelegate_(delegate)

    AppHelper.runEventLoop()

我使用的是macOS 10.13.6和Python3.7，我通过鼠标左键点击得到：

2019-08-17 12:10:57.071 python[16084:78526] NSEvent: type=LMouseDown loc=(1034,130) time=13052.3 flags=0 win=0x0 winNum=131 ctxt=0x0 evNum=0 click=1 buttonNumber=0 pressure=1 deviceID:0x0 subtype=0
NSEvent: type=LMouseDown loc=(1034,130) time=13052.3 flags=0 win=0x0 winNum=131 ctxt=0x0 evNum=0 click=1 buttonNumber=0 pressure=1 deviceID:0x0 subtype=0
2019-08-17 12:10:57.323 python[16084:78526] NSEvent: type=LMouseDown loc=(890,99) time=13052.5 flags=0 win=0x0 winNum=131 ctxt=0x0 evNum=0 click=1 buttonNumber=0 pressure=1 deviceID:0x0 subtype=0
NSEvent: type=LMouseDown loc=(890,99) time=13052.5 flags=0 win=0x0 winNum=131 ctxt=0x0 evNum=0 click=1 buttonNumber=0 pressure=1 deviceID:0x0 subtype=0
2019-08-17 12:10:57.452 python[16084:78526] NSEvent: type=LMouseDown loc=(890,99) time=13052.7 flags=0 win=0x0 winNum=131 ctxt=0x0 evNum=0 click=2 buttonNumber=0 pressure=1 deviceID:0x0 subtype=0
NSEvent: type=LMouseDown loc=(890,99) time=13052.7 flags=0 win=0x0 winNum=131 ctxt=0x0 evNum=0 click=2 buttonNumber=0 pressure=1 deviceID:0x0 subtype=0

要在终端/控制台上运行脚本，它必须是后台任务

$ python app.py &

你可以稍后用ps杀死它：

$ ps
  PID TTY           TIME CMD
16059 ttys001    0:00.03 /bin/bash -l
16124 ttys001    0:00.77 python test.py
$ kill -9 16124